Adjustable bed-spring.



.i. H. WILLEMS.

ADJUSTABLE BED SPRING. APPLICATION FILED was, 1916.

new and useful invention resides JOHN H. WILLEMS, OFF KENUSHshQ Wllfilll'CiNSllN.

ADJUSTABLE BED-SPRING.

1,229,5bll.

specification of Letters Patent.

racemes June is, lei r.

application filed August 5, 1916. Serial Ito. 113,220.

To all whom it may concern:

Be it known that 1, JOHN H. VVILLEIlIS,.3. citizen of the United States, and resident of Kenosha, in the county of Kenosha and State of Wisconsin,

Improvements in Adjustable Bedfiprings; and I do hereby declare that the following is a full, clear, and exact description thereof.

The present invention relates to new and useful improvements in bed springs, more particularly of that type including a series of spring coils, and an intersecting series of tie members.

Bed springs of this nature require to be tightened from time to time, and the usual method of tightening is to draw the springs longitudinally. This method, however does not provide for independent tightening of the springs, particularly as this would procure distortion of the tie members, and possesses other disadvantages in practice. It is primarily an object of the present invention to provide a means for individually tightening the coils of a bed spring, and it is. more specifically an object to procure a tension adjustment of the coils by axial twisting manipulation thereof, in a manner, however, which does not interfere with the disposition of the tie members of the spring nor with their connection with tlieooils.

In connection with the adjustment of the coils, it i.s further an object to provide a means for securing the ends or" the coils to the frame in a manner wherein their on tremities are held against possible detachment or engagement with the bed clothes, yet in a manner permitting; ready detacl1- ment of the coil ends for twisting manipulation thereof.

A further and more general object of the in the provision of a bed spring wherein the sagging tendency of the coils is reduced to a minimum.

A still further object resides in the provision of tie members which are interwoven with the coils in the formation of the spring fabric to materially reduce the cost of manufacture thereof and to produce a structure of maximum strength and durability.

With the above and other objects and ad vantages in View, the invention resides more particularly in the novel combination, an ran ement and formation of parts more particu arly hereinafter described and pointed out in the appended claims.

have invented certain rring noW more particularly to the accompanying drawings 5 and 6 respectively the side-and end rails of the usual frame of the bed spring. In the present structure the spring coils 7 extend transdesignate versely in spaced relation across the frame and are secured to the side rails, in a readily detachable manner, by passing their end convolutions through a series of openings 8 in said side rails adjacent their inner edges, the extremities of said end convolutions being extended inwardly and engaged under the top portions of the eonvolutions whereby possible accidental displacement of the coils is prevented and further whereby said eX- tremities are held against such engagement with bed clothes or the like as might tear them. The extremities of said end convolutions are preferably inserted through their openings from the under side of the rails to permit them to be more readily placed beneath the top portions of the convolutions. Extending longitudinally of the frame and secured in openings 9 in the end rails 6 are a series of tie members 10 each comprising a pair of wires twisted together throughout with their portions adjacent the intersections of the coils 7 spaced apart to form loops 11 eachloosely receiving one side of the adjacent convolution. of a coil. The tie members may thus be readily and most economically interwoven with the coils to form the body fabric of the spring.

To adjust the tension of the springs, they are detached from one of the sills and twist ed axially and then again secured to the rail. In this operation the convolutions of the coils move freely through the loops 10, to distribute the tension equally along the lengths of the coils, and thus neither the positions of the tie members nor their connec- 'tions with the coils are afiected upon independent tension adjustment of the coils. I am aware that it has been heretofore contemplated to adjust the tension of bed spring coils by twisting them axially, the adjusting feature or my invention resides more particularly in the compensating connections between the coils and the tie members, and although it has been heretofore contemplated to connect the coil springs of a bed by independent links which form loose tie members after a fashion, such an arrangement would not 'be practical in the present arrangement due to the differential tension at times afforded different portions of each coil which. would tend to displace the links along the coils, and I find the provision of a continuous tie member provided with spaced portions holding the coils in a manner permitting rotation thereof, to be essential in the present structure.

A further advantageous feature of the present structure resides in the provision of transverse'spring coils and longitudinal tie members secured to the ends of the frame and connected with the intersecting portions of the coils whereby the, sagging tendency present in that type of structure including apart to form loops to longitudinally extending coils is prevented.

claim: r p

1. A bed spring of the class described comprisingin combination, a frame, a series of transversely extending coil springs coil springs.

ries of transversely having their opposite end convolutions en- 2. A bed spring of thef'class described comprising in combination, a frame haying a series of openings formed in its opposite rails adjacent the inner edges thereof, a se extending coil springs gageable through the openings in the side rails from the under side thereof their extremities being directed inwardly beyond the adjacent edgesof the rails anddisposed under the ,upper portions of thesaid end convolutions for the purpose set forth, the tension of said springs being varied by axially twisting the same, and a series of longitudinally extending tie members disposed through the openings in the end rails, each being formed from a pair of twisted Wires, the portions adjacent the convolutions be-- ing spaced apart to form loops for loosely receiving said springs, the position of said tie members being unchanged by varying the tension of said coil spring In testimony that Iclaim the foregoing I have hereunto set my hand at Kenosha, in the county of Kenosha and State of Wisconsin, in the presence of two Witnesses.

JOHN HPWILLEMS, Witnesses PAUL BRAssnL, JOHN ZnNs. 

